Transmission and agricultural machine

Abstract

This invention provides a transmission device and agricultural machinery. A forward clutch and a reverse clutch are sequentially mounted on the first input shaft along its axial direction. The forward and reverse clutches share a common outer hub. Power is transmitted from the first input shaft to the first output shaft via either the forward or reverse clutch. A main transmission module is included, with the first input shaft located at the top of the main transmission module. In this invention, the axes of the first input shaft, first output shaft, second output shaft, and second input shaft are not coplanar, which simultaneously improves the axial and circumferential space utilization of the transmission device. Furthermore, the location of the first input shaft at the top of the main transmission module reduces oil churning losses and improves operating efficiency. The fact that both the forward and reverse clutches are electronically controlled automatic clutches enhances driver comfort.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, and in particular relates to a transmission device and agricultural machinery. Background Technology

[0002] With the continuous development of agricultural mechanization, tractors are being used more and more widely in the agricultural machinery industry. However, tractors currently generally use manual operation for gear shifting and steering, resulting in a low level of automation, which leads to low driver comfort and low operating efficiency. Furthermore, the existing power steering and power high / low gear devices have low integration and poor space utilization. Utility Model Content

[0003] The main purpose of this utility model is to propose a transmission device and agricultural machinery, which aims to solve the technical problems of poor operating comfort and low space utilization of the transmission device in the prior art.

[0004] To achieve the above objectives, this utility model provides a transmission device, the transmission device comprising: A power reversing module includes a first input shaft, a first output shaft, a forward clutch, and a reverse clutch. The forward clutch and the reverse clutch are sequentially arranged on the first input shaft along its axial direction. The forward clutch and the reverse clutch share a common outer hub. The first input shaft transmits power to the first output shaft through the forward clutch or the reverse clutch. A main transmission module has the first input shaft located at its top. The main transmission module includes a second input shaft and a second output shaft. The axes of the first input shaft, the first output shaft, and the second input shaft are not coplanar. A main shifter is provided on both the second input shaft and the second output shaft. The second input shaft and the first output shaft are drively connected. Different transmission gear sets with varying gear ratios are arranged on both sides of the main shifter along the power transmission direction. The main shifter engages the main transmission gear sets with different gear ratios, allowing the second input shaft to transmit power to the second output shaft through the main transmission gear sets.

[0005] In this embodiment of the utility model, the transmission device further includes a crawling gear module, which includes a crawling input shaft and a crawling output shaft arranged sequentially in the vertical direction. A crawling shifter is provided on one of the crawling input shaft and the crawling output shaft. A transmission gear and a reduction gear set are respectively provided on both sides of the crawling shifter along the power transmission direction. The crawling shifter is used to engage the transmission gear or the reduction gear set so that the crawling input shaft transmits power to the crawling output shaft through the transmission gear or the reduction gear set.

[0006] In this embodiment of the utility model, the transmission device further includes a secondary transmission module. The secondary transmission module includes a third input shaft and a first secondary shifter. The input shaft and the second output shaft are connected in a transmission manner. The first secondary shifter is provided on the third input shaft. The first secondary shifter is provided with secondary transmission gear sets with different transmission ratios on both sides along the power transmission direction. The secondary transmission gear sets are all connected to the crawling input shaft. The third input shaft transmits power to the crawling input shaft through the secondary transmission gear sets with different transmission ratios.

[0007] In this embodiment of the utility model, the secondary transmission module further includes a high-gear gear set, and a second secondary gear shifter is provided on the crawling input shaft. The second secondary gear shifter is used to engage the high-gear gear set, and the two secondary transmission gear sets are a low-gear gear set and a medium-gear gear set, respectively.

[0008] In this embodiment of the utility model, the transmission device further includes a secondary transmission module. The secondary transmission module includes a third output shaft and a secondary shifter disposed on the third output shaft. The secondary shifter has secondary transmission gear sets with different transmission ratios disposed on both sides along the power transmission direction. The secondary transmission gear sets are connected to the second output shaft or the crawling output shaft. The secondary shifter is used to engage the secondary transmission gear sets with different transmission ratios, so that the second output shaft or the crawling output shaft transmits power to the third output shaft through the secondary transmission gear sets with different transmission ratios.

[0009] In this embodiment of the present invention, the main shifter includes a first main shifter and a second main shifter. The first main shifter is disposed on the second output shaft, and the second main shifter is disposed on the second input shaft. The first main shifter and the second main shifter are spaced apart along the axial direction of the first input shaft.

[0010] In this embodiment of the present invention, the main shifter further includes a third main shifter, which is disposed on the second output shaft, and the second main shifter is located between the first main shifter and the third main shifter.

[0011] In this embodiment of the invention, the second input shaft is connected to the front end of the first output shaft via a gear.

[0012] In this embodiment of the invention, the main shifter is a synchronizer or a meshing gear sleeve.

[0013] This utility model also proposes an agricultural machine, which includes the transmission device described above.

[0014] Through the above technical solution, the transmission device provided by the present utility model embodiment has the following beneficial effects: The transmission system includes a power reversing module and a main transmission module. The forward and reverse clutches of the power reversing module are both electronically controlled automatic clutches. Through an existing electro-hydraulic system, the forward and reverse clutches are electro-hydraulic controlled, allowing power transmission from the first input shaft to the first output shaft via different gears. When reversing is required, one of the forward and reverse clutches can slowly disengage while the other slowly engages, achieving uninterrupted power input during reversal. This improves driver comfort and operational efficiency. Furthermore, by placing the first input shaft with the forward and reverse clutches on top of the main transmission module, the churning losses of the two clutches are reduced, lowering the transmission's heat output and improving overall efficiency. The non-coplanar structure of the first input shaft, first output shaft, second input shaft, and second output shaft allows for a more compact axial and longitudinal (circumferential) structure, reducing both the size and weight of the transmission. The transmission device in this invention integrates the power reversing module and the main transmission module, making the axes of the first input shaft, the first output shaft, the second output shaft, and the second input shaft non-coplanar. This improves the axial and circumferential space utilization of the transmission device. Furthermore, by positioning the first input shaft on top of the main transmission module, oil churning losses are reduced, improving operating efficiency. Both the forward clutch and the reverse clutch are electronically controlled automatic clutches, enhancing driver comfort.

[0015] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a transmission schematic diagram of a transmission device according to an embodiment of the present invention; Figure 2 This is a transmission schematic diagram of the transmission device according to another embodiment of the present utility model; Figure 3 This is a transmission schematic diagram of the transmission device according to another embodiment of the present utility model; Figure 4 This is a transmission schematic diagram of the transmission device according to another embodiment of the present invention; Figure 5 This is a transmission schematic diagram of a transmission device according to an embodiment of the present utility model.

[0017] Explanation of reference numerals in the attached figures Detailed Implementation

[0018] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0019] The transmission device according to the present invention is described below with reference to the accompanying drawings.

[0020] like Figures 1 to 5 The figures shown represent five different embodiments of the transmission device in this utility model. Among them, as... Figure 1 As shown, the transmission device 100 includes a power reversing module 101, a main transmission module 102 capable of four-speed shifting, a secondary transmission module 104 capable of three-speed shifting, and a creeper gear module 103 capable of two-speed shifting, connected sequentially along the vehicle length direction (i.e., the axial direction of the first input shaft S1); as Figure 2 As shown, the transmission device 100 includes a power reversing module 101 connected sequentially along the vehicle length direction, a main transmission module 102 capable of six-speed shifting, a creeper gear module 103 capable of two-speed shifting, and a secondary transmission module 104 capable of two-speed shifting; as shown... Figure 3 As shown, the transmission device 100 includes a power reversing module 101 connected along the length of the vehicle, a main transmission module 102 capable of four-speed shifting, and a secondary transmission module 104 capable of two-speed shifting; as shown... Figure 4 As shown, the transmission device 100 includes a power reversing module 101, a main transmission module 102 capable of six-speed shifting, and a secondary transmission module 104 capable of two-speed shifting, all connected sequentially along the vehicle length direction; Figure 5 As shown, the transmission device 100 includes a power reversing module 101 connected along the length of the vehicle, a main transmission module 102 capable of six-speed transmission, and a secondary transmission module 104 capable of three-speed transmission.

[0021] It should be noted that the transmission device 100 includes a power reversing module 101 and a main transmission module 102. The power reversing module 101 includes a first input shaft S1, a first output shaft S2, a forward clutch C1, and a reverse clutch C2. The forward clutch C1 and the reverse clutch C2 are sequentially arranged on the first input shaft S1 along the axial direction of the first input shaft S1. The forward clutch C1 and the reverse clutch C2 share a common outer hub. The fact that the forward clutch C1 and the reverse clutch C2 are housed in the same outer hub can save axial dimensions and simplify parts. The first input shaft S1 can be connected to the outer hub through a connector located between the forward clutch C1 and the reverse clutch C2, which can further improve the axial structural compactness of the transmission device 100. The axial direction of the transmission device 100 is consistent with the power transmission direction. The first input shaft S1 transmits power to the first output shaft S2 via a forward clutch C1 or a reverse clutch C2. In one embodiment, both the forward clutch C1 and the reverse clutch C2 are electronically controlled automatic clutches. The first input shaft S1 is located at the top of the main transmission module 102, and the main transmission module 102 includes a second input shaft S3 and a second output shaft S5. The axes of the first input shaft S1, the first output shaft S2, and the second input shaft S3 are not coplanar. A main shifter is provided on both the second input shaft S3 and the second output shaft S5. The second input shaft S3 and the first output shaft S2 are connected in a transmission manner. The main shifter is provided with main transmission gear sets with different transmission ratios on both sides along the power transmission direction. The main shifter is used to engage the main transmission gear sets with different transmission ratios so that the second input shaft S3 transmits power to the second output shaft S5 through the main transmission gear sets.

[0022] Understandably, the transmission device 100 in this embodiment is mainly used in agricultural machinery tractors used for field operations.

[0023] The transmission device 100 in this embodiment includes a power reversing module 101 and a main transmission module 102. The forward clutch C1 and reverse clutch C2 of the power reversing module 101 are both electronically controlled automatic clutches. By using the existing electro-hydraulic system to electro-hydraulic control of the forward clutch C1 and reverse clutch C2, the first input shaft S1 can transmit power to the first output shaft S2 through different gears. When reversing is required, one of the forward clutch C1 and reverse clutch C2 can be slowly disengaged and the other can be slowly engaged, realizing uninterrupted power input reversing. This can improve the driver's operating experience, increase driving comfort, and improve work efficiency. Furthermore, by setting the first input shaft S1 with the forward clutch C1 and reverse clutch C2 on the top of the main transmission module 102, the oil churning loss of the two clutches can be reduced, the heat power of the transmission device 100 can be reduced, and the overall working efficiency of the transmission device 100 can be improved. The non-coplanar structure of the first input shaft S1, first output shaft S2, and second input shaft S3 of the transmission device 100 allows for a more compact axial and longitudinal (circumferential) structure, reducing both the size and weight of the transmission device 100. In this embodiment, the transmission device 100 integrates the power reversing module 101 and the main transmission module 102, making the axes of the first input shaft S1, first output shaft S2, and second input shaft S3 non-coplanar. This simultaneously improves the axial and circumferential space utilization of the transmission device 100. Furthermore, by positioning the first input shaft S1 on top of the main transmission module 102, oil churning losses are reduced, improving operating efficiency. The fact that both the forward clutch C1 and reverse clutch C2 are electronically controlled automatic clutches enhances driver comfort.

[0024] In one embodiment, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the power reversing module 101 also includes an idler shaft S4, a first gear 1, a second gear 2, a third gear 3, a fourth gear 4, a fifth gear 5, a sixth gear 6, and a seventh gear 7. It has a short shaft span, good rigidity, and saves materials and processing costs. In another embodiment, as shown... Figure 3 As shown, the power reversing module 101 also includes an idler shaft S4, a first gear 1, a second gear 2, a third gear 3, a fourth gear 4, a fifth gear 5, and a sixth gear 6. Specifically, the axes of the first input shaft S1, the first output shaft S2, the second input shaft S3, and the idler shaft S4 are not coplanar. The first input shaft S1 and the second input shaft S3 can be arranged side by side on the top of the first output shaft S2, and the first output shaft S2 is located between the first input shaft S1 and the second input shaft S3 along the vehicle width direction. The idler shaft S4 and the first output shaft S2 are arranged side by side at the bottom of the first input shaft S1, thereby improving the axial and circumferential space utilization of the transmission device 100.

[0025] In one embodiment, the transmission device 100 further includes a crawler gear module 103. The crawler gear module 103 includes a crawler input shaft S8 and a crawler output shaft S9 arranged sequentially in the vertical direction. A crawler shifter T4 is provided on one of the crawler input shaft S8 and the crawler output shaft S9. A transmission gear and a reduction gear set are respectively provided on both sides of the crawler shifter T4 along the power transmission direction. The crawler shifter T4 is used to engage the transmission gear or the reduction gear set, so that the crawler input shaft S8 transmits power to the crawler output shaft S9 through the transmission gear or the reduction gear set. In this embodiment, the crawler shifter T4 can be a meshing gear sleeve, which is more economical. Figure 1 As shown, when no deceleration is required, the crawler shifter T4 is coupled with the twentieth gear 20, and power is directly transmitted from the crawler input shaft S8 to the crawler output shaft S9 without deceleration. When deceleration is required, the crawler shifter T4 is coupled with the twenty-second gear 22, and the twentieth to twenty-third gears 23 participate in deceleration and torque amplification. The transmission device 100 in this embodiment includes a power reversing module 101, a main transmission module 102, and a crawler shifter module 103, which can achieve uninterrupted power reversal, multi-gear shifting, and obtain greater torque, meeting the needs of more user scenarios.

[0026] It should be noted that the transmission device 100 also includes a secondary transmission module 104. The secondary transmission module 104 includes a third input shaft S6 and a first secondary shifter T5. The input shaft and the second output shaft S5 are connected in a transmission manner. The first secondary shifter T5 is mounted on the third input shaft S6. Different transmission ratio secondary gear sets are arranged on both sides of the first secondary shifter T5 along the power transmission direction. Both secondary gear sets are connected to the crawling input shaft S8. The third input shaft S6 transmits power to the crawling input shaft S8 through the secondary gear sets with different transmission ratios. In this embodiment, the first secondary shifter T5 can be a synchronizer or a meshing gear sleeve, such as... Figure 1 As shown, the auxiliary transmission module 104 is connected between the main transmission module 102 and the creeper gear module 103. The auxiliary transmission module 104 and the creeper gear module 103 share the creeper input shaft S8, making the axial structure of the transmission device 100 more compact. In this embodiment, the power reversing module 101, the main transmission module 102, the creeper gear module 103, and the auxiliary transmission module 104 are integrated. By setting the auxiliary transmission module 104, the need for more gears can be met.

[0027] Specifically, the secondary transmission module 104 also includes a high-gear set, and a second secondary shifter T6 is provided on the crawling input shaft S8. The second secondary shifter T6 is used to engage the high-gear set, and the two secondary transmission gear sets are a low-gear set and a medium-gear set, respectively. In this embodiment, by providing the second secondary shifter T6 on the crawling input shaft S8, the secondary transmission module 104 can achieve three-speed transmission of low, medium, and high gears, which can meet the needs of more user scenarios. Furthermore, by distributing the first secondary shifter T5 and the second secondary shifter T6 on the third input shaft S6 and the crawling input shaft S8, the circumferential space of the transmission device 100 can be fully utilized, avoiding excessive axial space occupation.

[0028] It should be noted that the transmission device 100 also includes a secondary transmission module 104. The secondary transmission module 104 includes a third output shaft S7 and a secondary shifter disposed on the third output shaft S7. The secondary shifter is provided with secondary transmission gear sets with different transmission ratios on both sides along the power transmission direction. The secondary transmission gear sets are connected to the second output shaft S5 or the crawling output shaft S9. The secondary shifter is used to engage the secondary transmission gear sets with different transmission ratios, so that the second output shaft S5 or the crawling output shaft S9 transmits power to the third output shaft S7 through the secondary transmission gear sets with different transmission ratios.

[0029] like Figure 2 and Figure 3 As shown, in one embodiment, the creeper module 103 is connected between the main transmission module 102 and the auxiliary transmission module 104. The creeper module 103 and the auxiliary transmission module 104 share the creeper output shaft S9, which can save the separate output shaft, save component costs, and make full use of the axial space of the transmission device 100. The transmission device 100 in this embodiment includes a power reversing module 101, a main transmission module 102, a creeper module 103, and an auxiliary transmission module 104, which can realize multi-gear shifting and meet the needs of more users.

[0030] like Figure 4 and Figure 5 In another embodiment, the main transmission module 102 is connected to the power reversing module 101 and the auxiliary transmission module 104. The main transmission module 102 and the auxiliary transmission module 104 share the second output shaft S5, which can save component costs and make full use of the axial space of the transmission device 100, resulting in a more compact structure.

[0031] In one embodiment, the main shifter includes a first main shifter T1 and a second main shifter T2. The first main shifter T1 is disposed on the second output shaft S5, and the second main shifter T2 is disposed on the first input shaft S1. The first main shifter T1 and the second main shifter T2 are spaced apart along the axial direction of the first input shaft S1. Figure 1 and Figure 3As shown, the two main gear shifters are respectively disposed on the second input shaft S3 and the second output shaft S5, and the two main gear shifters are spaced apart along the axial direction of the transmission device 100, which can shorten the axial distance between the first input shaft S1 and the second output shaft S5, making the structure of the transmission device 100 more compact. The main gearbox in this embodiment can realize four-speed transmission.

[0032] In another embodiment, the main shifter further includes a third main shifter T3, which is disposed on the second output shaft S5, and a second main shifter T2 is located between the first main shifter T1 and the third main shifter T3. In this embodiment, there are three main shifters: one on the second input shaft S3 and two on the second output shaft S5. The two second main shifters T2 are spaced apart along the axial direction of the transmission device 100 on the second input shaft S3, and are located between the two first main shifters T1 along the axial direction of the transmission device 100. This staggered arrangement of the three main shifters along the axial direction of the transmission device 100 reduces the distance between the central axes of the second input shaft S3 and the second output shaft S5. This allows the main transmission module 102 to achieve six-speed transmission while also making its structure more compact.

[0033] like Figure 3 As shown, in one embodiment, the second input shaft S3 is connected to the front end of the first output shaft S2 via a gear transmission. This ensures a compact structure while allowing for a longer axial dimension of the second input shaft S3, thus meeting the needs of a wider range of users.

[0034] Specifically, the main shifter is either a synchronizer or a meshing gear sleeve. In one embodiment, the main shifter is always a synchronizer, which ensures smoothness during gear shifting; in another embodiment, the main shifter is always a meshing gear sleeve, which achieves gear shifting by coupling with different gears, thus enabling the transmission device 100 in this embodiment to have better economic performance.

[0035] like Figure 1 As shown, in one embodiment, the power reversing module 101 includes an idler shaft S4, a first gear 1, a second gear 2, a third gear 3, a fourth gear 4, a fifth gear 5, a sixth gear 6, and a seventh gear 7, where CF represents the forward clutch C1 and CR represents the reverse clutch C2. When the agricultural machinery needs to reverse, the power transmission sequence is: C2-5-4-6-7. When the agricultural machinery needs to move forward, the power transmission sequence is: C1-1-2 / 6-7.

[0036] like Figure 3As shown, in another embodiment, the power reversing module 101 includes an idler shaft S4, a first gear 1, a second gear 2, a third gear 3, a fourth gear 4, a fifth gear 5, and a sixth gear 6. When the agricultural machinery needs to reverse, the power transmission sequence is: C2-5-4-6 / 2-3. When the agricultural machinery needs to move forward, the power transmission sequence is: C1-1-2-3.

[0037] like Figure 1 As shown, in one embodiment, the main transmission module 102 has two main shifters, and the main transmission gear set includes the eighth gear 8, the ninth gear 9, the tenth gear 10, the eleventh gear 11, the twelfth gear 12, the thirteenth gear 13, the fourteenth gear 14, and the fifteenth gear 15. In this embodiment, the main transmission module 102 can realize four-speed transmission. In first gear, the power transmission direction is: S3-9-8-S5; in second gear, the power transmission direction is: S3-11-10-S5; in third gear, the power transmission direction is: S3-13-12-S5; and in fourth gear, the power transmission direction is: S3-15-14-S5.

[0038] like Figure 2 As shown, the main transmission module 102 has three main shifters. The main transmission gear set includes the eighth gear 8, the ninth gear 9, the tenth gear 10, the eleventh gear 11, the twelfth gear 12, the thirteenth gear 13, the fourteenth gear 14, the fifteenth gear 15, the sixteenth gear 16, the seventeenth gear 17, the eighteenth gear 18, and the nineteenth gear 19. In this embodiment, the main transmission module 102 can realize six-speed transmission. In first gear, the power transmission direction is: S3-9-8-S5; in second gear, the power transmission direction is: S3-11-10-S5; in third gear, the power transmission direction is: S3-13-12-S5; in fourth gear, the power transmission direction is: S3-15-14-S5; in fifth gear, the power transmission direction is: S3-17-16-S5; and in sixth gear, the power transmission direction is: S3-19-18-S5.

[0039] like Figure 2 and Figure 3 As shown, the creeper module 103 includes a twentieth gear 20, a twenty-first gear 21, a twenty-second gear 22, and a twenty-third gear 23. In this embodiment, the creeper module 103 can switch between deceleration and non-deceleration gears. When deceleration is required, the power transmission direction is: S5-20-21 / 23-22-S9. When deceleration is not required, the power transmission direction is: S5-S9.

[0040] like Figure 1As shown, in one embodiment, the secondary transmission gear set includes gears 24, 25, 26, 27, 28, 29, 30, and 31. The secondary transmission module 104 in this embodiment can achieve three-speed transmission. In low gear, the power transmission direction is S6-27-26-S8; in medium gear, the power transmission direction is S6-29-28-S8. The crawling input shaft S8 and the third output shaft share a single shaft.

[0041] like Figure 5 As shown, in another embodiment, the secondary transmission gear set includes the 26th gear 26, the 27th gear 27, the 28th gear 28, the 29th gear 29, the 30th gear 30, and the 31st gear 31. In this embodiment, the secondary transmission module 104 can achieve three-speed transmission. In low gear, the power transmission direction is: S5-30-31-S7; in medium gear, the power transmission direction is: S5-26-27-S7; and in high gear, the power transmission direction is: S5-28-29-S7. Figures 2 to 4 As shown, in another embodiment, the secondary gear set includes the twenty-sixth gear 26, the twenty-seventh gear 27, the twenty-eighth gear 28, and the twenty-ninth gear 29. The secondary gear module 104 in this embodiment can realize two-speed shifting.

[0042] This utility model also proposes an agricultural machine, which includes the transmission device 100 as described above. The specific structure of the transmission device 100 is as described in the above embodiments. Since the agricultural machine adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. In one embodiment, the agricultural machine can be applied to a tractor.

[0043] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0046] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A transmission device, characterized in that, The transmission device (100) includes: The power reversing module (101) includes a first input shaft (S1), a first output shaft (S2), a forward clutch (C1), and a reverse clutch (C2). The forward clutch (C1) and the reverse clutch (C2) are sequentially arranged on the first input shaft (S1) along the axial direction of the first input shaft (S1). The forward clutch (C1) and the reverse clutch (C2) share a common outer hub. The first input shaft (S1) transmits power to the first output shaft (S2) through the forward clutch (C1) or the reverse clutch (C2). The main transmission module (102) has a first input shaft (S1) located at the top of the main transmission module (102), and the main transmission module (102) includes a second input shaft (S3) and a second output shaft (S5). The axes of the first input shaft (S1), the first output shaft (S2), and the second input shaft (S3) are not coplanar. A main shifter is provided on both the second input shaft (S3) and the second output shaft (S5). The second input shaft (S3) and the first output shaft (S2) are connected in a drive. The main shifter is provided with main transmission gear sets with different transmission ratios on both sides along the power transmission direction. The main shifter is used to combine the main transmission gear sets with different transmission ratios so that the second input shaft (S3) transmits power to the second output shaft (S5) through the main transmission gear sets.

2. The transmission device according to claim 1, characterized in that, The transmission device (100) further includes a crawler gear module (103), which includes a crawler input shaft (S8) and a crawler output shaft (S9) arranged sequentially in the vertical direction. A crawler shifter (T4) is provided on one of the crawler input shaft (S8) and the crawler output shaft (S9). A transmission gear and a reduction gear set are respectively provided on both sides of the crawler shifter (T4) in the power transmission direction. The crawler shifter (T4) is used to engage the transmission gear or the reduction gear set so that the crawler input shaft (S8) transmits power to the crawler output shaft (S9) through the transmission gear or the reduction gear set.

3. The transmission device according to claim 2, characterized in that, The transmission device (100) further includes a secondary transmission module (104), which includes a third input shaft (S6) and a first secondary shifter (T5). The input shaft and the second output shaft (S5) are connected in a transmission manner. The first secondary shifter (T5) is provided on the third input shaft (S6). The first secondary shifter (T5) has secondary transmission gear sets with different transmission ratios on both sides along the power transmission direction. The secondary transmission gear sets are all connected to the crawling input shaft (S8). The third input shaft (S6) transmits power to the crawling input shaft (S8) through the secondary transmission gear sets with different transmission ratios.

4. The transmission device according to claim 3, characterized in that, The secondary transmission module (104) also includes a high-gear gear set, and a second secondary gear shifter (T6) is provided on the crawling input shaft (S8). The second secondary gear shifter (T6) is used to engage the high-gear gear set, and the two secondary transmission gear sets are a low-gear gear set and a medium-gear gear set, respectively.

5. The transmission device according to claim 2, characterized in that, The transmission device (100) further includes a secondary transmission module (104), which includes a third output shaft (S7) and a secondary shifter disposed on the third output shaft (S7). The secondary shifter is provided with secondary transmission gear sets with different transmission ratios on both sides along the power transmission direction. The secondary transmission gear sets are connected to the second output shaft (S5) or the crawling output shaft (S9). The secondary shifter is used to engage the secondary transmission gear sets with different transmission ratios so that the second output shaft (S5) or the crawling output shaft (S9) transmits power to the third output shaft (S7) through the secondary transmission gear sets with different transmission ratios.

6. The transmission device according to any one of claims 1 to 4, characterized in that, The main shifter includes a first main shifter (T1) and a second main shifter (T2). The first main shifter (T1) is disposed on the second output shaft (S5), and the second main shifter (T2) is disposed on the second input shaft (S3). The first main shifter (T1) and the second main shifter (T2) are spaced apart along the axial direction of the second input shaft (S3).

7. The transmission device according to claim 6, characterized in that, The main shifter also includes a third main shifter (T3), which is disposed on the second output shaft (S5), and the second main shifter (T2) is located between the first main shifter (T1) and the third main shifter (T3).

8. The transmission device according to any one of claims 1 to 4, characterized in that, The second input shaft (S3) is connected to the front end of the first output shaft (S2) via a gear.

9. The transmission device according to any one of claims 1 to 4, characterized in that, The main shifter is a synchronizer or a meshing gear sleeve.

10. An agricultural machine, characterized in that, The agricultural machinery includes the transmission device (100) as described in any one of claims 1 to 9.

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